抗菌剂的必备条件
首先、塑料中使用的抗菌剂应具有良好的抗菌性能,对革兰氏阴性菌(大肠杆菌等)、革兰氏阳性菌(金黄色葡萄球菌等)具有抗菌性,抗菌率达到90%以上;如果有防霉要求的,对混合霉菌的防霉等级达到0-1级。可参考QB/T 2591-2003、ASTM G-21;
其次、塑料制品可能经常在户外或有水的环境中使用,所以在选择塑料抗菌剂时要充分考虑制品在使用过程中洗涤和溶出的可能性,要保证制品在使用过程中抗菌性保持足够的时效;
第三、耐候性、耐热性和抗菌剂在加工与使用过程中的稳定性也是选择塑料抗菌剂时应该考虑的因素;
第四、抗菌剂和塑料基体之间具备适宜的相容性和迁移性,保证抗菌塑料制品的长期有效性;
第五、抗菌剂不会对塑料产品的性能或外观产生消极的影响,并且抗菌剂要具有储存稳定性或一定的使用寿命;
第六、抗菌剂应用方便,同时对人体、动物和环境(包括生产过程和使用环境中)具有较好的安全性。

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